Honeywell T8631A Owner's Manual page 24

Program
The times and temperatures you set to define the
comfort and energy savings periods for each schedule
(weekdays, Saturday, Sunday).
Saturday program schedule
The schedule of WAKE, LEAVE, RETURN and SLEEP
period start times and temperatures that you program to
run on Saturdays.
Setback
Reducing the temperature in the house for a set period
every day in winter for energy savings. The lower
temperature is the energy savings temperature.
Setup
Raising the temperature in the house for a set period
every day in summer for energy savings. The higher
temperature is the energy savings temperature.
EM HT light [T8631R only] (red)—this light glows
whenever the thermostat system switch is in the EM
HT position (located on subbase). On some systems
it may also indicate the need to switch to EM. HEAT
because of a problem with the heat pump.
Sunday program schedule
The schedule of WAKE, LEAVE, RETURN and SLEEP
period start times and temperatures that you program to
run on Sundays.
Time period
One of four program periods: WAKE, LEAVE, RETURN
and SLEEP available with the Chronotherm III Thermo-
stat. One period begins when the previous period ends.
WAKE—The time period when you want the house
at a comfortable temperature while the family gets up
and gets ready to leave for work and school. This is
the only period that must contain a time and tem-
perature.
LEAVE—The time period when you can set back
(winter) or up (summer) the temperature for energy
savings because the family is usually away from
home.
GLOSSARY
Set point
The temperature you set on the thermostat. The
thermostat turns the heating or cooling equipment on
and off to maintain this temperature at the thermostat
location until another temperature setting goes into
effect.
STATUS LIGHTS—Lights that show system operation
settings.
SYSTEM light (yellow)—This light glows whenever
the thermostat is calling for heating or cooling
(located on thermostat).
AUX HT light [T8631R only] (green)—This light
glows whenever the thermostat is calling for opera-
tion of the backup heater. Backup (auxiliary) heat is
more expensive to operate than the heat pump and
typically is used only when the heat pump is unable
to handle the load (located on subbase).
RETURN—The time period when you want the
house at a comfortable temperature for family
activities in the evening before bedtime.
SLEEP—The time period when you can set back
(winter) or up (summer) the temperature for energy
savings because the family is sleeping. Set it to start
at your family's normal bedtime. Often the SLEEP
program is set only for the heating season so family
members can sleep cool in summer.
TotalHome
A Honeywell system that lets you control your home
environment from a user interface panel. Depending on
the system chosen, you can also use a touchtone
phone to adjust your settings. TotalHome offers
convenience and flexible control of your security system
and home environment.
Weekday program schedule
The schedule of WAKE, LEAVE, RETURN and SLEEP
period start times and temperatures that you program to
run Monday through Friday.
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